Golf-ball mold.



Ex W. BUGKAU'.

G0L? BALL MOLD.

- APPLICATION FILED SEPT.29,1911.

1,041,958. l Patented non. 22, 1912. V

un .eran salaries ERNST W. BUCKA'UfDF NEW YORK, N. Y.

senr-nam Mono Specification or Letters Patent. @relient-.ml @et 22, f.

Application filed enteinner 29, lfll.v Serial No. 851388.

To. all whom it may concern:

Be it known that I, ERNST W. Boonen, a citizen of the United States, residing at New York, in the county of New York and State ,5 of NeW`York, have invented certain new and useful Improvements in Golf-Ball Molds, 'of which the following is a specifi-- cation.

This invention relates t-o improvements in 10.golf balldies,cups or molds, the object thereof being to provide an improved golf ball mold which can be readily and inex-` pensively constructed and by means of which a perfectly round or spherical golf ball can Jbe obtained having any desired shape of brambles thereon.

It is Well known in practice ythat golf'balls l provided With brambles are not always perfectly round, due to the manner in which the same are molded. In other Words, it has been the usual practice to provide the golf ball cup vwith pro'ections to .form recesses or branibles in the all. lt is extremely difficult, and frequently impossible, to get these projections all of the same depth, aside from the fact that theportions of the -rnetal of the mold-between the projections have to be chiseled or scraped out, which has to be done by hand, so that, aside from the fact that thisis an expensive and diiiicult operation, it is almost impossible to get the projections all of the same depth, and consequently the ball is not usually a perfectly round ball.

The object, therefore, of the present iinproveinent is to provide a golf ball cup or mold by means of which an absolutely true, round lmll can be obtained, for the-reason that all ofthe bramble forming 'recesses in -40 the ball will necessarily be of thesame depth.

In the drawings accompanying and forming part of this specification, Figure l illustrates a pair of the golf ball cupsor molds in juxtapositior as the;7 are usually placed whenthe ball is to be molded; Fig. 2 is a cross-sectional view of one of the molds; Fig. 3 is an enlarged detail view of a portion of the mold; Figs. 4e and 5 illustrate different forms of bramble forming devices;

and Fig, 6 is a view of a portion of the molded Dall.

Similar characters of reference indicate corresponding parts throughout the figures 35 of the drawings.

In carrying out the present improvement,

is made about .0005 of ain inch larger than* the openings 3 in the mold. The mold or cup is thenheated and the stems of' the insert. pieces'are inserted into the openings or holes 3 and the mold allowed to shrink, whereupon the inserts will loe held firmly in position. The mold is then properly Washed with solder, which not only assists in holding the inserts in position, but keeps the cup from rusting.' Since the cup is scraped, it follows that as the heads of the'inserts are all of the same thickness a perfect-ly round vball can be obtained.

From the foregoing it yWill be observed that the bramble forming devices are'formed separately from the mold, so that the mold can not only be scraped to gage, but a perfeetly round ball can be obtained.

l claim as my invention:

l. A golf ball mold comprising a cup having a series of openings located over ap'- proximately the entire surface thereof'and v a series of oramble forming members 'having stems projecting into said openings.

2. golf ball mold comprisinga cup having a series of openings therein and bramble forming members having stems projecting into said openings and held therein by the shrinkage ot' the mold by permittingthe same to cool after heating. 4'

3. A golf ball mold comprising a cupvshaped member having series of openings therein, and a series of branlble forming members having heads and stems larger than the openings in the cup and secured in such openings by first heating the mold and then inserting such stems and allowing thev mold to cool.

4. A golf ball mold comprising a cupshaped' member having drilled holes therein and bramble forming members having stems prffjecting into said holes and retained therein by the shrinkage of the mold on the cooling thereof after heating.

5. A golf ball mold comprising two semispherical cupe, each having a series of openv ings therein, and :1 series of bmmble formmg members comprising heads larger than said 0 )eninfrs and havin@ stems ri il" se t: C

l0 secured in. said openings by heating and c001- meme@ img' he cup and insertingthe stems intel/.- mediae such heating and cooling 0pe1'ati0ns.

Signedat 1821 Park ROW Building, New:

fork, N. Y., this 25th 'day of September,

ERNST W; BUCKU.

Witnesses: i

C. A. VVEED, F. E. ROYCE. 

